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Encapsulation of MPLS over Layer 2 Tunneling Protocol Version 3 (RFC4817)

IP.com Disclosure Number: IPCOM000148761D
Original Publication Date: 2007-Mar-01
Included in the Prior Art Database: 2007-Mar-30
Document File: 13 page(s) / 27K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

M. Townsley: AUTHOR [+5]

Abstract

The Layer 2 Tunneling Protocol, Version 3 (L2TPv3) defines a protocol for tunneling a variety of payload types over IP networks. This document defines how to carry an MPLS label stack and its payload over the L2TPv3 data encapsulation. This enables an application that traditionally requires an MPLS-enabled core network, to utilize an L2TPv3 encapsulation over an IP network instead.

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This is the abbreviated version, containing approximately 10% of the total text.

Network Working Group                                        M. Townsley Request for Comments: 4817                                  C. Pignataro Category: Standards Track                                     S. Wainner                                                            Cisco Systems                                                                 T. Seely                                                            Sprint Nextel                                                                 J. Young                                                               March 2007

     Encapsulation of MPLS over Layer 2 Tunneling Protocol Version 3

Status of This Memo

   This document specifies an Internet standards track protocol for the    Internet community, and requests discussion and suggestions for    improvements.  Please refer to the current edition of the "Internet    Official Protocol Standards" (STD 1) for the standardization state    and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The IETF Trust (2007).

Abstract

   The Layer 2 Tunneling Protocol, Version 3 (L2TPv3) defines a protocol    for tunneling a variety of payload types over IP networks.  This    document defines how to carry an MPLS label stack and its payload    over the L2TPv3 data encapsulation.  This enables an application that    traditionally requires an MPLS-enabled core network, to utilize an    L2TPv3 encapsulation over an IP network instead.

Townsley, et al.            Standards Track                     [Page 1]
 RFC 4817                    MPLS over L2TPv3                  March 2007

 Table of Contents

   1. Introduction ....................................................2

      1.1. Specification of Requirements ..............................2

   2. MPLS over L2TPv3 Encoding .......................................2

   3. Assigning the L2TPv3 Session ID and Cookie ......................4

   4. Applicability ...................................................4

   5. Congestion Considerations .......................................6

   6. Security Considerations .........................................6

      6.1. In the Absence of IPsec ....................................7

      6.2. Context Validation .........................................7

      6.3. Securing the Tunnel with IPsec ..............................